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Questions and Answers
Which of the following is the best definition of respiration?
Which of the following is the best definition of respiration?
Which of the following does not kill endospores?
Which of the following does not kill endospores?
Which of the following cannot be used to sterilize a heat-labile solution stored in a plastic container?
Which of the following cannot be used to sterilize a heat-labile solution stored in a plastic container?
An encapsulated bacterium can be virulent because the capsule
An encapsulated bacterium can be virulent because the capsule
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Microscopic examination of a patient's fecal culture shows comma-shaped bacteria. These bacteria require 2-4% NaCl to grow. The bacteria probably belong to the genus
Microscopic examination of a patient's fecal culture shows comma-shaped bacteria. These bacteria require 2-4% NaCl to grow. The bacteria probably belong to the genus
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Rheumatic fever is most commonly caused by:
Rheumatic fever is most commonly caused by:
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Study Notes
Respiration
- Respiration is defined as a sequence of carrier molecules with an inorganic molecule as the final electron acceptor.
- It is not the same as generating ATP, although ATP is generated during respiration.
- Complete oxidation of glucose to CO2 and H2O is also not the definition of respiration, but rather a process that occurs during respiration.
Sterilization
- Autoclaving, incineration, and hot-air sterilization are all effective methods for killing endospores.
- Pasteurization is not effective against endospores.
Sterilization Methods
- Gamma radiation, ethylene oxide, and supercritical fluids can be used to sterilize heat-labile solutions stored in plastic containers.
- Autoclaving and short-wavelength radiation are not suitable for this purpose.
Capsule and Virulence
- The capsule of an encapsulated bacterium can contribute to its virulence by resisting phagocytosis.
- The capsule is not an endotoxin, nor does it destroy host tissues or kill host cells.
Bacterial Identification
- Comma-shaped bacteria that require 2-4% NaCl to grow are likely to belong to the genus Vibrio.
- This distinguishes them from Campylobacter, Escherichia, Salmonella, and Shigella.
Disease Causes
- Rheumatic fever is most commonly caused by Streptococcus pyogenes.
- Streptococcus viridans, Staphylococcus aureus, and other bacteria are not typically associated with this disease.
Bacitracin Sensitivity Test
- The Bacitracin sensitivity test is used to identify Group A streptococci.
- It is not used for Pneumococci, Gonococci, or Staphylococci.
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Description
Test your knowledge of microbiology with these quiz questions covering topics such as respiration and endospores.
